PA3526 PROTEC | Alldatasheet

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Technical content

Dual USB Power Control Switch with Over-Current/Voltage Protection PA3526 2929 S. Fair Lane, Tempe, AZ 85282 Tel: (602) 414–5122. Fax: (602) 414--5141 www.protekanalog.com F eatures

Applications

ο USB Power Management ο Hot plug-in power supplies ο Battery - Charger circuits

Ordering Information

Part Number Enable Temperature Range PA3526-H Active High -40°C to +85°C PA3526-L Active Low -40°C to +85°C ο 2 independent switches ο ο Individual open-drain fault flag pins 2.7V to 5.5V input ο 500mA continuous load current per port ο 140mΩ maximum on-resistance ο ο 1µA Maximum Standby Supply Current Thermal shutdown ο Undervoltage lockout (UVLO) ο Active-high or active-low enable versions Pin configuration PA3526X 8(OUTA) LOGIC, CHARGE PUMP (ENA) 1 (FLGA) 2 7(IN) 5(OUTB) LOGIC, CHARGE PUMP (FLGB) 3 (ENB) 4 6 (GND) P in Description Pin Number Pin Name Pin Function 1, 4 EN(A/B) Enable (Input): Logic-compatible enable input. High input > 2.1V typical. Low input <1.9V typical (H active high, L active low). 2, 3 FLG(A/B) Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, and thermal shutdown, UVLO, OVLO. 6 GND Ground. 7 IN Supply Input: Output MOSFET drain. Also supplies IC’s internal circuitry. 8, 5 OUT(A/B) Switch Output: Output MOSFET source. Typically connect to switched side of load. D etailed description Power switch T he power switch is an N-channel MOSFET with a maximum on-state resistance of 500 mΩ (VIN=5V). The power switch supplies a inimum of 100 mA per switch. m E nable (EN or EN) T he logic enable disables the power switch and the bias for the charge pump, driver, and other circuitry to reduce the supply current to l c ess than 1µA when a logic high is present on EN (PA3526-L) or a logic low is present on EN (PA3526-H). The enable input is ompatible with both TTL and CMOS logic levels. Driver T he driver controls the gate voltage of the power switch. To limit large current surges the driver incorporates circuitry that controls the rise times and fall times of the output voltage. Charge pump A n internal charge pump supplies power to the driver circuit and provides the necessary voltage to pull the gate of the MOSFET above the source. Fault Flag FLG (A/B) F c LG is an N-channel, open-drain MOSFET output. The fault-flag is active (low) for one or more of the following conditions: under-voltage, urrent limit, or thermal shutdown. The flag output MOSFET is capable of sinking a 10 mA load to typically 100mV above ground. M ultiple FLG pins may be “wire NO Red” to a common pull-up resistor. T hermal shutdown A n internal thermal-sense circuit shuts off the power switch when the junction temperature rises to approximately 150 Hysteresis is built into the thermal sense circuit. O O ver-voltage lockout VLO (over-voltage lockout) prevents the output MOSET from turning on if VIN exceeds approximately 6.5V. Over voltage detection functions o nly when at least one switch is enabled

Dual USB Power Control Switch with Over-Current/Voltage Protection PA3526 2929 S. Fair Lane, Tempe, AZ 85282 Tel: (602) 414–5122. Fax: (602) 414--5141 www.protekanalog.com Current sense (CS) A sense FET monitors the current supplied to the load. When an overload or short circuit is encountered, the current-sense circuitry sends a control signal to the driver. The driver in turn reduces the gate voltage and sends the power FET into its saturation region, which switches the output into a constant current mode. Under-voltage lockout UVLO (under-voltage lockout) prevents the output MOSFET from turning on until VIN exceeds approximately 2.3V. In the under-voltage state, the FLAG will be low. After the switch turns on, if the voltage drops below approximately 2.1V, UVLO shuts off the output MOSFET and signals fault flag. Under-voltage detection functions only when at least one switch is enabled. Operating Ratings (Note 2) Parameter PA3526 Absolute Maximum Ratings (Note1) Parameter Maximum Units Supply Voltage (VIN) 2.7V to 5.5V Ambient Operating Temperature (TA) -400C to +850C Supply Voltage (VIN) 6 Fault Flag Voltage (VFLG) 6 V Fault Flag Current (IFLG) 50 mA Output Voltage (VOUT) 6 V Output Current (IOUT) Internally Limited A Control input (VEN) -0.3 to 12 V CStorage Temperature (TS) -65 to 150

Electrical Characteristics

TА = 25oC, VIN = +5V; unless noted Parameter Condition Min Typ Max Units Supply Current Enable Input Threshold Note 3, switch off, OUT = open, 0.5 1 Note 3, all switches on, OUT = open, 120 200 Low-to-high transition 2.1 2.4 High-to-low transition, Note 3 0.8 1.9 µA V Enable Input Current VEN= 0V ⎟ 5.5V -0.5 ±0.01 0.5 µA Enable Input Capacitance 1 pF VIN= 5V, IOUT=500mA , each switch 100 140 VIN= 2,7V, IOUT=500mA , each switch 140 180 Switch Resistance m Output Turn-On Delay RL=10Ω, each output 0.5 ms Output Turn-On Rise Time RL=10Ω, each output 1 ms Output Turn off Delay RL=10Ω, each output 1 20 µS Output Turn off Fall Time RL=10Ω, each output 1 20 µS Output Leakage Current each output (output disabled) 10 µA Continuous Load Current each output 0.5 A each output (enable into load) VOUT=4.0V 0.5 1.2 1.9 each output (enable into load) VOUT=0.1V 1 1.5 Short-Circuit Current Limit A Current-Limit Threshold Ramped load applied to enabled output, VOUT < 4.0 V 1.6 2.2 A TJ increasing 135 Over temperature Shutdown °CThreshold TJ decreasing 125 VIN=5,0V, IL=10mÀ 10 25 VIN=3,3V, IL=10mÀ 11 35 VIN=2,7V, IL=10mÀ 12 40 Error Flag Output Resistance Ω Error Flag Off Current VFLAG=5 V 0.01 1 µA VIN increasing 2.3 VIN decreasing 2.1 VIN increasing 6.5 VIN decreasing 6.3 UVLO Threshold OVLO Threshold V V Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating approximately 200mV of hysteresis.

Dual USB Power Control Switch with Over-Current/Voltage Protection PA3526 2929 S. Fair Lane, Tempe, AZ 85282 Tel: (602) 414–5122. Fax: (602) 414--5141 www.protekanalog.com Block Diagram Pad Location PA3526 Pad Location Coordinates N Pad Name Pad size Coordinates, µm (∝m x ∝m) X Y 1 ENA 136 x 120 323.5 220 2 FLGA 136 x 120 1111.5 237.5 3 FLGB 136 x 120 2187.5 237.5 4 ENB 136 x 120 2975.5 220 5 OUTB 140 x 130 3079 1260.5 5 OUTB 140 x 130 3079 1465.5

5 OUTB 140 x 130 3079 1664

6 GND 140 x 130 3079 1943.5 7 IN 140 x 130 1650 1260.5 7 IN 140 x 130 1650 1462.5

7 IN 140 x 130 1650 1664

8 OUTA 140 x 130 220 1259

Chip size 3.3 x 2.15 mm 8 OUTA 140 x 130 220 1465.5 8 OUTA 140 x 130 220 1664.5